Changes of dopamine turnover in the progression of Parkinson's disease as measured by positron emission tomography: their relation to disease-compensatory mechanisms.


An increase in dopamine turnover has been shown to occur early in Parkinson's disease (PD). This study investigated changes of dopamine turnover as a function of PD duration using the effective distribution volume (EDV) for dopamine, determined by positron emission tomography with 6-[18F]-fluoro-L-dopa, and compared them with changes in dopamine synthesis… (More)


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